(19)

(11)

EP 0 624 297 A1

(12)

(43) Date of publication: 17.11.1994 Bulletin 1994/46 (21) Application number: 93902403.0 (22) Date of filing: 18.01.1993

(51) International Patent Classification (IPC):  H04L 12/ 26( . ) H04L 12/ 437( . ) (86) International application number: PCT/GB1993/000103 (87) International publication number: WO 1993/014586 (22.07.1993 Gazette 1993/18)

(84) Designated Contracting States: DE FR GB (30) Priority: 20.01.1992 GB 19920001126 (71) Applicant: MADGE NETWORKS LIMITED Buckinghamshire HP8 4AH (GB)	(72) Inventors: PEARCE, David, Andrew High Wycombe Buckinghamshire HP11 2TW (GB) LONEY, Mark, Kenneth Watford Hertfordshire WD1 8BA (GB) (74) Representative: Skone James, Robert Edmund, et al  GILL JENNINGS & EVERY Broadgate House 7 Eldon Street London EC2M 7LH London EC2M 7LH (GB)